AIB2C Heavy-Duty Trailer Ramp Coil Springs — Matched Left & Right Set RS16933, 90° Deflection, 1/2" Steel

AIB2C Heavy-Duty Trailer Ramp Springs are a left-and-right coil spring pair engineered to assist lifting and lowering heavy trailer ramps and gates with a 90° deflection design.

These trailer coil springs (RS16933LH and RS16933RH) come as a matched set — one left-side and one right-side spring — built from 1/2" steel round bar with 4" long ears and a central helix sized to fit over a 1.50" diameter shaft. They’re made for use on trucks and trailers where extra leverage and controlled motion are needed to help raise heavy ramps or tailgates. The springs deliver a strong mechanical assist without adding complex hardware, making ramp operation smoother and safer for everyday loading tasks.

How do these springs make lifting heavy trailer ramps easier?

The RS16933 pair provides stored torsional energy that reduces the manual force required to raise or lower a ramp. With a designed 90-degree deflection, the springs supply consistent assist through the typical travel arc of most ramp hinges, smoothing start-and-stop motion and reducing jarring.

• 90° deflection tuned for ramp hinge movement
• Half-inch steel bar for predictable torque and durability
• Matched left/right pair keeps balance and alignment
• Fits standard 1.50" diameter shafts for simple retrofits

Will these springs fit my trailer or truck ramp?

Compatibility depends on shaft diameter, mounting ear length, and available clearance. These springs are designed to fit over a 1.50" diameter shaft and include 4" long ears to engage common latch and bracket configurations.

• Mounts over 1.50" (1.5 inch) diameter shafts
• 4" ears to accommodate typical hinge brackets
• Left and right versions supplied to match original orientation
• Commonly used on truck ramps, trailer gates, and heavy tailgates

How durable and safe are the AIB2C RS16933 springs?

Constructed from 1/2" steel round bar, these heavy-duty coil springs are built for repeated loading cycles and rugged service. Proper installation and inspection are important to maintain safe operation; replace both sides as a matched set if one is worn to preserve balanced torque and prevent uneven stress on the ramp mechanism.

• Made from 1/2" steel for long service life under load
• Supplied as a left/right matched set to prevent imbalance
• Designed to reduce sudden drops and jarring during ramp motion
• Regular inspection recommended for safe performance

How do I install the left and right coil springs?

Installation typically involves supporting the ramp in a safe position, sliding each spring over the shaft in the correct orientation, and securing ears into the mounting slots or brackets. Because springs store energy, use proper tools and safety supports or follow professional guidance if you are unsure.

• Support the ramp before removing old springs
• Slide springs onto the 1.50" shaft with correct left/right orientation
• Engage 4" ears into bracket slots and check clearance
• Test ramp motion slowly and re-inspect fasteners and fit

Who is this for: The AIB2C Heavy-Duty Trailer Ramp Spring pair is aimed at truck and trailer owners, fleet operators, and maintenance technicians who need a straightforward, heavy-duty spring solution to make loading ramps and gates easier and safer. It’s suitable for retrofit projects on trailers and trucks that use a 1.50" shaft and require a robust 90° deflection support — ideal for commercial users or anyone handling heavy cargo ramps who wants reliable mechanical assist without complex modifications.